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3G Investigations

URL
http://dewy.fem.tu-ilmenau.de/CCC/22C3/audio/mp3/22C3-567-en-3g_investigations.mp3
File name
22C3-567-en-3g_investigations.mp3
File size
23.6 MB
MD5
6d260756024db5e96c21a67bbd15473e
SHA1
0098c03529e2d6e708f47d8e52130f37aad37691

We are giving an overview of ip networks used for >=2.5G technologies. Our main focus is on scanning the overlaying ip network, on different Voice-over-IP filter implementations and the possibilities to circumvent them. We want to explain the ip networks used in GPRS and UMTS cellular networks from the enduser point of view. How do they work today and what has to be done to get a normal webpage, voice-over-ip or even a video stream onto your PDA or SmartPhone. For your private investigations inside your providers ip network we want to demonstrate you a tcp/udp port and round-trip-time based traceroute program based on the .NET compact framework. With the help of this program we want to analyse the anti voice-over-ip filters implemented by different cellular providers and show you some possibilities how to circumvent them _efficently_. So we don't just tunnel all the traffic through a VPN. But even when these filters become more sophisticated in the future we want to present some ideas how to defeat your right to talk via voice-over-ip whereever and whenever you want to.

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